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Constructing => Software / Technical => Topic started by: Etienne on October 09, 2026, 03:24:52 AM

Title: CrossWordFalcon : free and open-source crossword generator and player
Post by: Etienne on October 09, 2026, 03:24:52 AM

Hi !

For few weeks I'm working on a new software.

Demo server here:
https://falcon.cubaix.com/

Few crossword samples here:
https://github.com/EtienneAb3d/CrossWordFalcon/blob/main/GRID_SAMPLES/README.md

Fully human work to fully automatic crossword and clues generation, with many tools using AI to help in interactive mode.
Currently six languages (including bilingual grids).

Please feel free to share your comments to help me improve it!

Etienne

Title: Re: CrossWordFalcon : free and open-source crossword generator and player
Post by: Etienne on October 09, 2026, 11:37:27 PM

Features

Crossword generation

• Six languages: French, English, German, Spanish, Italian, Portuguese.
• Bilingual grids: across words in one language, down words in another.
• Any size from 5×5 to 50×50, plus ready-made formats ("Préconfigurations"): grids up to 30×30 work reliably; 50×50 is still being fine-tuned.
• Three difficulty levels (Easy, Medium, Hard).
• Symmetric black-cell layouts: horizontal, vertical, diagonal, both ways, or rotation.
• Seven levels of computing effort for filling the grid automatically, from the quick "Flash" to the exhaustive "GridZilla".
• Themed grids: vocabulary and clues steered toward a subject you choose.
• "Challenge Words": force your own words into the grid.

Clues

• Clues written automatically by an AI language model, in the grid's language.
• Grounded in real dictionary definitions, grammar and example sentences.
• Short generated title for every grid.
• "Recompute": rewrite every clue of a grid, saved as a new version.
• Local AI model by default; optional cloud AI models (Mistral, Claude...) with automatic fallback to the local AI model.

Playing

• Playable grid in the browser, with keyboard or on-screen keyboard.
• "Check" and "Solution" buttons, without losing your answers.
• Zoom and sliders for large grids.
• Grid statistics: word count per length.
• Timer and progress saved under your nickname; resume anytime.
• Per-grid leaderboard (correct letters, then time).
• Shareable "Play" link for each grid.

Interactive mode (build a grid yourself)

• Place words one at a time ("Next") or by hand, undo step by step.
• Toggle black cells by hand, mirrored if the symmetry option is on.
• Word suggestions per slot, per crossing, by start or end.
• Warnings on letters that would block a crossing word.
• Highlighting of impossible, poor and set-aside slots.
• Letter statistics for every empty cell.
• "Clean": remove impossible zones automatically.
• "Finish the grid" / "Finish the zone": let the generator complete it.
• Suggested and automatic definitions, suggested titles.
• "Correct": fix spelling and grammar in a definition or title.
• Drafts saved automatically ("Créations"), publish to the Library.
• Reopen any Library grid, or any generation attempt, for editing.

Library and export

• Every grid stored in a shared Library, filterable by language and level.
• Player count per grid; "seen" tracking.
• PDF download (one or two A4 pages).
• Across Lite .puz download.
• SVG/PNG images of each published grid and its solution.

Tools

• Dictionary: same-root search, real definitions, AI-proposed definitions.
• Synonyms and theme-related words.
• Paraphraser: 5 rewordings of a sentence.
• Bilingual lookups side by side.
• One-click links to Perplexity, ChatGPT, Claude, Mistral and Euria.
• David FALCON: chat assistant for help and hints, without spoiling answers.
• Crossword news panel (RSS feeds and publishers' daily grids).

Interface and deployment

• Interface in six languages, following the chosen language.
• Nickname protected by a secret word.
• Online-user counter and CPU/GPU load meters.
• Runs entirely locally, on CPU or GPU (NVIDIA, Apple Silicon).
• Optional dual-GPU setup.
• Server available in Python or Java, interchangeable.
• Batch generator to pre-fill the Library.
• Command-line generator.
• Dictionaries rebuildable from their original sources.

Title: Re: CrossWordFalcon : free and open-source crossword generator and player
Post by: Etienne on October 15, 2026, 12:43:55 AM

Now clearly offers 2 crossword pattern styles to build crosswords (for both fully human work to fully automatic grid/words/clues generation):

• sparse-French pattern style
• grouped/aligned-American/NYT pattern style. Improved/optimized.

Please feel free to share your comments to help me improve it!